Process of joining rails



Patented Nov. 8, I898 B. ENTWISLE.

W A 3 C W/TNESSES' UNITED STATES PATENT 0* Fries.

EDlVARD B. ENTYVISLE, OF JOHNSTOIVN, PENNSYLVANIA, ASSIGNOR TO THEJOHNSON COMPANY, OF OHIO.

PROCESS OF JOINING RAILS.

SPECIFICATION forming part of Letters Patent No. 613,799, dated November8,1898..

A li ti fil d August 6 1898. Serial No. 687,935. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD B. ENTWIsLE, of Johnstown, in the county ofOambria and State of Pennsylvania, have invented a new and usefulProcess of Joining Rails, of which the following is a full, clear, andexact de- .scription, reference being had to the accompanying drawings,which form a part of this specification.

My invention relates to what are known as cast-iron joints forcontinuous railwaytrack; and it is the object of my invention to soimprove these joints and the process of making them that I may be ableto overcome certain difficulties found in this class of work inobtaining a true alinement of the railheads. In joining rails by thismethod there has been no control over the alinement of the rails exceptby a crude method of clamping the rails while casting. This has notalways proved efficacious. The cast-iron has been poured about the jointso as-to completely surround the lower flange of the rail; but the topsurface of the rail is left open, and as a result the lower part of therail is heated more than the upper part. WVhile heated in this unequalmanner, the lower portion of course tends to expand more than the upperportion, and as a result the rail cambers downward. Ordinarily a railunequally heated in this manner will tend to restraighten during thecooling operation, and under some conditions will even have a reverse orupward camber when it has become cold; but in a case of this kind thecast-iron has so little malleability after it has chilled that the railis prevented from cambering upward and is retained at a low position.This causes low joints and all the annoyances to which low above thehead and tram of the rail as soon as it has become sufficiently cold,and to facilitate this removal I provide recesses in the side of thecasting.

Referring to the drawings, Figure 1 is a sectional view of a rail-jointof my invention before the top portion of the cast-iron has beenremoved. Figs. 2 and 3 are side views of such a joint, showing the jointas it ap pears before and after removing the top portion of the casting.

A and B represent the two track-rails, and these are connected by theiron 0 cast about them in a mold, as is well known to those skilled inthe art. Heretofore the mold used for this purpose has been shaped so asto provide a casting having the conformation of the casting of Fig. 3.By my improved method the casting is first formed substantially as shownin Fig. 1viz. with the additional top portion O and recesses 0 betweenthe main body O of the casting and the top portion 0. As soon as thecasting has cooled sufficiently the portion 0 is removed by blows from asledge or by any suitable means.

The particular amount of metal in the top portion 0 proportionally tothat of the balance of the casting is obviously a question to bedetermined by those skilled in the art. Where the top of the rail has agreater section than the bottom, it may be advisable not to heat it toquite so high a temperature, and the top portion 0 would becomparatively light. On the other hand, if the rails have been in useprior to the time at which they are connected by the cast metal it maybe desirable to purposely camber the rails upward, (to be afterward madeperfectly level by mechanical means, such as by shaping,) which may bedone by increasing the amount of metal in the top portion 0.

I do not limit myself to the specific details which I have herein setforth, as these are not essential to my broad invention.

Having thus described my invention, what I claim, and desire to protectby Letters Patent, is-

1. The method of casting rail-joints connected with cast-iron consistingin casting metal about the entire periphery of the ends of the rail andafterward removing the portion above the top of the rail.

2. A cast-metal rail-joint in which the metal is cast around the entireperiphery of the ends of the rails but is removed after casting, fromthe top of the rail.

a portion extending above the tread-surface of the rail and with aportion extending below the lower flange of the rail, and then removingthe first-mentioned portion of the casting.

In testimony whereof I have affixed my signature in presence of twowitnesses.

EDWARD B. ENTVVISLE. Witnesses:

J OHN I-I. KENNEDY, II. XV. SMITH.

